Place the apples in a slow cooker. In a medium bowl, mix the sugar, cinnamon, cloves & salt. Pour the mixture over the apples in the slow cooker & mix well.

Cover & cook on high for 1 hour.

Reduce heat to low & cover 9 to 11 hours, stirring occasionally, until the mixture is thickened & dark brown.

Uncover & continue cooking on low 1 hour or longer depending on how thick you want it. Stir with a whisk, if desired, to increase smoothness (or use immersion blender).

If you want to keep in jars for future - place jars & lids in boiling water. One at a time, spoon hot mixture in a jar & immediately place lid on top to seal.

Or... just put in jars & refrigerate. Can be spread on toast, bagels, etc.